Sorting Date columns in Beta3/4 using DD/MM/YYYY format

I'm trying to sort data in a grid with a date column. The data in this column is in the format dd/mm/yyyy.

In Alex's post <a href="http://www.activewidgets.com/javascript.forum.10412.0/using-data-formats-with-js.html target="_new">/javascript.forum.10412.0/using-data-formats-with-js.html</a>, the example used dates in the format mm/dd/yyyy. I changed the example to use dates in dd/mm/yyyy format and the dates no longer sort correctly.

- Is there a setting to indicate to the underlying code which date model is being used?
- If the user enters dates in the local format, would it be best to capture these and convert them to the underlying mm/dd/yyyy format?

Thanks, Helen.

PS. Sorry if this has been asked previously!

var ukFormat = [ 
    ["aaa", "111", "21-02-2005"], 
    ["bbb", "22", "01-01-2004"], 
    ["bbb", "22", "10-11-2002"] ,
    ["bbb", "22", "31-01-2003"],
    ["bbb", "22", "31-01-2004"]
]; 

var usFormat = [ 
    ["aaa", "111", "02-21-2005"], 
    ["bbb", "22", "01-01-2004"], 
    ["bbb", "22", "11-10-2002"] ,
    ["bbb", "22", "01-31-2003"],
    ["bbb", "22", "01-31-2004"]
]; 

var string = new AW.Formats.String; 
var number = new AW.Formats.Number; 
var date = new AW.Formats.Date;

var obj = new AW.UI.Grid; 
obj.setCellText(ukFormat); 
obj.setCellFormat([string, number, date]); 

obj.setColumnCount(3); 
obj.setRowCount(5); 

document.write(obj);